cosmos
12th December 2018 at 1:16am
Fluid motion phenomena
Light phenomena
(by Johan Christian Dahl)
Halos, Sundogs and Light Pillars. Sundogs, light pillars, and other kinds of halos
https://www.timeanddate.com/astronomy/optical-phenomenon.html
See book: Light and colour in Nature. And light and color in the outdoors.
http://gizmodo.com/spectacular-light-display-in-northern-ontario-looks-lik-1791127923